I wouldn't bother to wait for the "in stock" flag, because there could be enough demand out there to soak every copy up immediately. And that may stay so for some foreseeable future.
What I'd do (and did) is, order from one of the reputed sellers and get in the waiting line.

Just to give you an impression on how some of the large-aperture primes stack-up with respect to framing/fov:
Nikkor 35f1.4G 27680m by Thomas, on Flickr
So there's quite some gain in framing when you take a 35mm instead of a 50mm lens, which cannot always be gained by simply stepping back almost 50% (which also changes perspective, btw.)

Vignetting is a very strange beast that I do not yet fully understand!
There is some "inevitable" vignetting that comes with the geometry of any wide-angle lens and I'm not sure whether the 35/1.4G goes beyond that. Only in the latter case - methinks - can any measures of wider lens-body or filter-thread help reduce vignetting.
I'll try to shoot some oof point-light sources and have a look at the rendering. If the casing of the lens is "in the way" and contributing to the vignetting the rendition should look like 3/4 moon, if you know what I mean.
Btw.: With the results I'm getting on my D300 I fear that vignetting on a FX-body could go as high as -2EV or even beyond (Photozone measured -0.7EV on a D200 and -2.2EV on a D3x for the 24/1.4G)
But again, I'm not sure whether my thoughts and extrapolations are correct.
Anyway...

Here's the test-shot which totally failed to be influenced by CaptureNX2's secret sauce of loCA-removal:
DSC_27572 loCA reduction in CNX2 by Thomas, on Flickr
This is reproduced here at below 50% magnification, click through the image to access the 100% crop. Shooting distance was around 40cm, aperture at f/1.4.
On the left loCA reduction is OFF, on the right tuned to 100%.
See any difference?

I've just tried an image from the 50/1.4G on the micro-focus test-chart, Wout.
Not exactly the same conditions but:
1. loCA looked quite similar to the 35/1.4G
2. no effect of CaptureNX's loCA reduction